docs: def getMultiSeriesRegistrations(self,q_filter=Q(),name_series=False,**kwargs):
          '''
          Use the getSeriesRegistered method above to get a list of each series the
          person has registered for.  The return only indicates whether they are
          registered more than once for the same series (e.g. for keeping track of
          dance admissions for couples who register under one name).
          '''
          series_registered = self.getSeriesRegistered(q_filter,distinct=False,counter=False,**kwargs)
          counter_items = Counter(series_registered).items()
          multireg_list = [x for x in counter_items if x[1] > 1]
  
          if name_series and multireg_list:
              if 'year' in kwargs or 'month' in kwargs:
                  return [str(x[1]) + 'x: ' + x[0].classDescription.title for x in multireg_list]
              else:
                  return [str(x[1]) + 'x: ' + x[0].__str__() for x in multireg_list]
          elif multireg_list:
              return '%sx registration' % max([x[1] for x in multireg_list])